175361-81-6Relevant articles and documents
Iridium-Catalyzed Direct Borylation of Five-Membered Heteroarenes by Bis(pinacolato)diboron: Regioselective, Stoichiometric, and Room Temperature Reactions
Ishiyama, Tatsuo,Takagi, Jun,Yonekawa, Yuhei,Hartwig, John F.,Miyaura, Norio
, p. 1103 - 1106 (2003)
An iridium(I) complex generated from 1/ 2[Ir(OMe)(COD)]2 and 4,4′-di-tert-butyl-2,2′-bipyridine catalyzed the direct borylation of 2-substituted thiophenes, furans and pyrroles in stoichiometric amounts relative to bis(pinacolato)diboron in hex
Manganese-Catalyzed C(sp2)-H Borylation of Furan and Thiophene Derivatives
Britton, Luke,Skrodzki, Maciej,Nichol, Gary S.,Dominey, Andrew P.,Pawlu?, Piotr,Docherty, Jamie H.,Thomas, Stephen P.
, p. 6857 - 6864 (2021/06/28)
Aryl boronic esters are bench-stable, platform building-blocks that can be accessed through metal-catalyzed aryl C(sp2)-H borylation reactions. C(sp2)-H bond functionalization reactions using rare- and precious-metal catalysts are well established, and while examples utilizing Earth-abundant alternatives have emerged, manganese catalysis remains lacking. The manganese-catalyzed C-H borylation of furan and thiophene derivatives is reported alongside an in situ activation method providing facile access to the active manganese hydride species. Mechanistic investigations showed that blue light irradiation directly affected catalysis by action at the metal center, that C(sp2)-H bond borylation occurs through a C-H metallation pathway, and that the reversible coordination of pinacolborane to the catalyst gave a manganese borohydride complex, which was as an off-cycle resting state.
Self-Assembly of M30L60 Icosidodecahedron
Fujita, Daishi,Ueda, Yoshihiro,Sato, Sota,Yokoyama, Hiroyuki,Mizuno, Nobuhiro,Kumasaka, Takashi,Fujita, Makoto
supporting information, p. 91 - 101 (2016/12/27)
Self-assembly is invaluable in the construction of giant molecular structures via a bottom-up approach. Although living organisms naturally make the most use of self-assembly and freely handle the mechanism at will, scientists are still far behind the level of nature. Inspired by the elegant structures of virus capsids, we have previously constructed roughly spherical giant metal complexes with the symmetry of an octahedron, cuboctahedron, and rhombicuboctahedron with the compositions M6L12, M12L24, and M24L48, respectively. Here, we report our first successful synthesis of an M30L60 molecular icosidodecahedron that consists of ～100 components: 30 Pd(II) ions and 60 ligands that assemble into the largest well-defined spherical macromolecule to date (diameter of ～8.2?nm). Tuning the flexibility of the ligand was the key for successful self-assembly. A highly complex but symmetrically organized structure was identified through X-ray crystallographic analysis. The interior space of the molecular complex is large enough (157,000??3) to enclose proteins.
